1: With 4-methyl-morpholine; isobutyl chloroformate in tetrahydrofuran T=-10°C; 0.75 h; 2: With sodium tetrahydroborate in tetrahydrofuran; water T=0°C; 2 h; 3: With ammonium chloride in tetrahydrofuran; water T=20°C;
参考文献
Bristol-Myers Squibb Company
Patent: US2011/82165 A1, 2011 ;
Location in patent: Page/Page column 29-30 ;